Smoke-stack



(No Model.) Y 2 Sheets-Sheet 1. G. S. ROB.

SMOKE STACK. No. 387,568. Patented Aug. 7, 1888.

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2. LI..- .e e h S s .fb e e h s 2 .K EG 0.A RM .0 HUM S d. d 0 M 0 N ll\ Patented Aug?, v1.388.

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IINTTED STATES PATENT EETeE.

CHARLES S. ROE, OF CHICAGO, ILLINOIS.

SMOKE-STACK.

SPECIFICATION forming Vpart of Letters Patent No. 387,568, dated August '7, 1888,

Application filed January 1S. 1888. Serial No. 261,088.

To all whom it may concer/'71,:

Be it known that I, CHARLES S. Ron, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Smoke-Stacks, of which the following is a specification. l

My invention is especially designed for use in locomotiveroundhouscs, but is also adapted to other situations, such as forgeres and the like.

The object of my invention is to produce a smoke-slack which shall be durable, not subject to dowudrafts, convenient, and not liable to be broken or injured by careless usage.

My invention consists in thc parts and combinations hereafter described and claimed.

In the accompanying drawings, Figure lis a side view, partly in section, ofthe full length oi' my improved stack. Fig. 2 is a side view of the lower part of same at right angles to Fig. 1. Fig. 3 is an enlarged section on line .e fc, Fig. 1. Fig. 4 is a vertical section of a stack having the ordinary iixed conical bottom. Fig. 5 is an enlarged section of a portion of the roof-plate. Fig. 6 is a top view of the drip-trough. Fig. 7 is a top view of thc roof-plate or collar by which the stack is supported.

A, Fig. l or Fig. 4, is the stack, which is composed of a number of cylindrical sections a a', duc., preferably of cast-iron, the flange ofl one section overlapping the next. Bolts oZ d passing through the overlapping ends, hold the sections together. In order to prevent the entrance of rain or snow the sections above the roof of the roundhouse are placed with their flanges downward. The moisture resulting from condensation within the stack would escape from. the downwardly-opening joints were it not for the formation given to the upper end of each section and its seat within the ilange of the section above.

A bevel sloping downward toward the center of the pipe is given to the upper edge of each section, and the interior of the flange is shaped to correspond therewith, as shown at g, Figs. 5 and 3, in which the flange end of one ofthe sections, as is shown, and the upper edge of collar D are beveled in the same manner as the pipe-section a', Src. As no protection against rain is needed below the collar or (No model.)

by braces n a above the inverted conical frustum N, which is united to the conical frustum M, which in turn is supported by braces Z Z, dsc., above the conical frustuni L, which eneircles the top of the stack A. The inverted cone I? serves simply as a stay to the cone L, and adds to the appearance of the stack. The arrangement of cones just described gives an upward direction to currents of air crossing the stack, preventing downdrafts and assisting the rise of warm air within by the induced currents. External air enters at Z Z, passes through M and out at a, thus creating au upward draft through the body ofthe stack.

In Fig. 3 the ordinary fixed hood is shown, which is always high enough above the locomotive-stack to clear it.

In Fig. l the stack is shown with a dropsection, a, on the bottom, which can be lowered so as to rest upon the locomotive-stack. Said section c3 is supported by ropes or chains G G, one on each side, which pass over pulleys F F, attached to the roof, whence they are led, after being brought together or united to a single rope, over the pulley J to the counterbalance-weight K. Across-piece, II, Fig. 2, through which they pass or to which they may be secured, keeps them parallel for a short distance from the stack. The bottom of the drop-section c3 (eide Fig. l) is surrounded bya gutter, b, for catching the drip. A short tube, c, extends far enough inward to discharge the drip into the interior of the locomotive-stack, thereby preventing injury to the outside of the engine and boiler.

The stack is supported by the roof-plate or collar D, the upper part being united thereto by a flange-joint, as sshown in Figs. 3 and 5. The collar D is provided with a downwardlyprojecting Ilange, a, for excluding wet from the leveling timbers D D', on which it rests.

In order to prevent the breaking of the lower part of the stack (shown in Figs. l, 2, and 8) in case the locomotive were moved, without raising the drop-section a3, the lower part of the stack is swung from a pivot, E, which passes through the collar D and the npper end of the lower portion of the struck. rlhe lower flange of collar D is niade elliptical or enough larger than the pipe to allow the littter to Swing clear of the engine even if the 5 drop-section a be not raised, while the upper flange is inadevcreulm to fit the pipe-section, :is seen in Fig. 7. Straps V V, suspended from the pivot E and bent nt their lower ends under the edge of lowest section, a, forni an 1o additional hond for holding the swingsections together. A damper-Such as R, Fig. 4-nmy he inserted, if desired.

l claim- In asinokestnck, the combination of u roofplate or collar, the fixed upper portion of the :5 Stack which rests thereon, and the swinging; lower portion, which is pivoted to said roel'- plnte und is provided :it the bottom with :L telescopic drop-section, Substantially as described.

GII'ARLES S. ROE.

\VitneSses:

l?. II. T. MASON, J. I. VENDER. 

